Stone-breaker



(No Model'.)

' R. MoGULLY. STONE BREAKER No. 463,911. Patented Nov. 24,1891.

WITNESSES JNVENTOR/ AJTORNEY NrrnD TATES A'rnNr 'FFICE.

ROBERT MOCULLY, OF PHILADELPHIA, PENNSYLVANIA.

STONE-BREAKER.

SPECIFICATION forming part of Letters Patent No. 463,911, dated November 24, 1891. Application filed September 17, 1886. Serial No. 213,795. (No model.)

To all whom it may concern.-

Be it known that I, ROBERT .MoCULLY, a

delphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Stone-Breakers, of which the following is a specification, reference bein ghad therein to the accompanying drawings, wherein- Figure 1 is a vertical section, partly in elevation, of a stone-breaking and ore-crushing machine embodying my improvements. Fig. 2 is a sectional detail view, partly in elevation, of a modified form of step-bearing for the gyratory shaft. Fig. 3 is asection on line 1 1; and Fig. 1 is a like view on line 2 2, Fig. 1.

My invention has relation to stone-breaking and orecrushing machines in general, and particularly to that form of the same for which Letters Patent of the United States were granted to me on the 7th day of September, 1886, Nos. 348,757 and 318,758; and it has for its object the construction of parts .to reduce the cost of manufacture, to increase the durability and efficiency of the machine, and to diminish the power required for operating it.

My invention accordingly consists of the combination, construction, and arrangement of parts, as herein after described and claimed.

In the drawings, A represents the frame or casing of the mill, composed ofthe bottom plate B, chute or outlet-chamber C, crushing-chamber D, and top plate E, flanged and bolted together, as shown or as desired. The top plate E has a vertically-arranged central beari'n g 0, open at both ends for the top or head f of the gyratory shaft F, which bearing has at its bottom an inwardly-projecting annular flange e, supporting a steel or other hard or chilled sleeve or bushing e against which bears the head or top fof shaft F. The head of the shaft is cylindrical in form with a slight taper from below upward, and it rolls around upon bushing c as the shaft F gyrates, without producing rubbing friction. The sleeve or bushing e is loose in bearing 6, and when worn out is readily replaced by a new one. The employmentof the loose bushing e avoids wear of bearing 6, and consequently of top plate E, so that it never needs replacement. The top of bearing e is closed by a cap or cover e having an edge flange e which fits into a shoulder e on the top of bearing 6. This cap 6 is preferably hinged at e to bearing 6, and is used for preventing dust or dirt gaining access to the bearing. The top plate E has the usual supply or feed openings e and its rim or flange e is constructed to partially overlap the top edge cl of the crushing faces in chamber D. These crushingfaces are composed of two parts at and d both of which are preferably made in sections, so as to be readily inserted into and withdrawn from the chamber D. The working faces of the two parts are reversely tapered, as shown, or they may be otherwise constructed, as desired. The sections of part cl have near their upper edges outside lugs or flanges (Z which fit into recesses d in the inner wall of chamber D, and their lower edges abut or rest upon the upper edges of the sections of part (1 whose lower edges rest upon a bottom shoulder (1 formed on chamber D immediately above the chute or outlet-chamber C. The chutes cfor the latter may be constructed and arranged as desired; but I prefer to follow the construction shown and described in the above-named patents. The crusher-head G is composed of a truncated cone-shaped sleeve g cast upon the shaft F in any suitable manner, and has abottom-edge flange g, which fits into a shoulder g at the bottom of the bore of the working faces of the crusherhead. These working faces are composed of two separate rings g g which have different tapers or angular formations, as shown, and are fastened to sleeve g, as described and shown in the aforesaid patents, or as otherwise preferred.

The bottom plate B is formed with a central depending bearing or well I), having a removable screw bottom 1). Outside of and concentric with the top part of well I) is a gutter b which is preferably continued above the top surface of plate B by an upwardlyprojecting annular flange b To prevent weakening of plate B by gutter b radiallyarranged bars are cast across said gutter, as shown more plainly in Figs. 3 and 4.

Upon the top of well I) is placed a steel ring or washer h, and upon this rests the drivinggear H, in the bore of which is a sleeve or bushing h, which is also inserted in well I),

and has an eccentric bore IF, into which the ond'f of shaft F passes, and by means of which the shaft and crusher-head G are gyrated. The sleeve 7i iskeyed to the wheel H, as is usual, and as indicated at W, so as to rotate therewith, and its exterior diameter snugly fits the bearing Z). Outside of gear-wheel If and formed upon the top of plate B is an annular flange or ring 7r to hold and retain any overflow of oil from gutter b and any waste of oil from the periphery of the driving wheel. Between the top of gear-wheel H and shaft F is a dust shield or protector N,which consists, essentially, of a central thick hub 11, having an opening for the shaft to pass through, so that the hub will loosely hug the shaft, an annular curved part a, terminating in a second thick rim or hub of, having a shoulder at, which enters an annular recess min a ring It, loosely mounted in position uponand near the top of driving-wheel H. The dust-shield is made of rubber, leather, or other flexible material, and rotates with the shaft F. It prevents dust or debris falling upon the top of the driving-wheel hub and gaining access to its bore or the shaft-bearingtherein. The shield N, being el'asticand having the thin curved part a, admits of it stretching oraccommodating itself to the vertical movement of the shaft when adjusted to regulate the fineness of the output or for other purposes. Between the lower end of shaftF and bottom I) is a knuckle or toggle stepbearing P, which preferably has a ball-shaped upper endp fitting into a semi-spherical recess or cavity f in the lower end of shaft F, and a loweror semi-spherical or cup-shaped end 23 impinging upon a ball b formed onor resting upon the top of screw bottom I). The ball 19 is preferably in line with the center line of the machine or of the well I) and the sleeve 6 6, while the knuckle or toggle P inclines with the center of the shaft F, but in an opposite direction to that of the inclination of the shaft in the eccentric bore in sleeve h. This step-bearing or toggle P supports the shaft in its inclined position opposite to the driving side of the eccentric or cam of the driving-wheel H, and it has the same gyratory movement as that of the shaft; or, in other words, the toggle P engages the lower end of the shaft F, and is so situated that it always points away from the eccentric portion of the wheel H, thereby causing itio incline constantly toward that part of the crusher-head which is in action. The toggle or knuckle P, so supporting shaft F, assists the cam or eccentric on the gearll to throw the head G to the grinding side of the mill, relieves the shaft of undue pressure between itand the driving side of the eccentric or cam of wheel II, avoids undue friction between said parts, and also the rubbing friction and consequent heating at the bottom of the shaft, and therefore less power is required to operate the machine than is required for thesame class of machines as heretofore made, or

wherein the end of the shaft rests and gyrates upon a flat step-plate or set-screwflvhich produces aviolent rubbing friction and resultant heating between the screw and shaft. By adjusting bottom I) in the proper direction the toggle or knuckle P and shaft F are raised or lowered to elevate ordepress crusher-head G for varying the degree of fineness of the output, and this is accomplished Without altering the relative positions of said toggle, shaft, and screw.

The oil-supply pipe M for gutter b has its supply end or nozzle m located outside of frame A at a height approximating a line drawn just below the top of gutter Z2 as indicated by dottedline m, Fig. 1that istosay, the nozzle m and top of gutter b arenearly level, the latter being slightly above tlre former, so that a quantityof oil poured into pipe M will first'fill the channels and cavities in bearing 5 and then rise in gutter 71 without overflowing from it. If, however, there is any ove1"flo\v,the annular flange or ring 71 prevents its escape from the machine. Theoil in gutter b finds its Way through lateral and annular ducts o and o,respectivel y, in the top of well I) to sleeve or bushing 7t,

thence down the same, filling thespace between the bottom I) and bottom of the shaft, thence by capillary attraction to the bearing for theshaft in sleeve it, so as to oil all parts of the shaft F, sleeve h, and wheel "II that need oiling. If desired, lateral openings 0 may be formed in sleeve h in line with d'uctsoand o to more readily supply oil to the shaft-bearing in said sleeve. The gutter b may, if desired, be providedwith adrain-cock 1' to'draw off the sediment accumulating insaid gutter. The adjustable bottom 6 is in the formof a setscrew, and is made large enough to provide a suitablebottoin opening in well I) for inserting the knuckle or toggle P intoand withdrawing it from the bearing without displacing any other parts of the machine.

I pr'efer'the form of toggle or knuckle I and end bearings therefor shown in Fig. 1, as grit or dirt do not readily collect on the bearings; but, if desired, the knuckle or toggle may have a ball at each end, as shown in Fig. 2, in which case the bearing 0' is inthe form ofa cup or recess in the top of'screw b to receive the ball on the lower end of the knuckle or toggle P.

The step-bearing P may be used Without an adjustable and detachable bottom I), or any othersuitable adjusting mechanism may be substituted for the screw form of said bottom; or,as shown in applications filed by me of an even date herewith, Serial Nos. 213,796 and 213,797, so too, if desired,vertical channels 25 may heformed on the outside and inside of sleeve 7r to facilitate the flow of oil down the same from recess or duct 0', as more plainly shown in Fig. 3. The bottom I) is provided with a suitable outlet-channel v, having a plug or cock v for draining oil? or removing the oil in bearing 1). For the same reason the plate Bis provided with a dripcock to between flange 7L3 and well I).

The removable and adjustable bottom I) is shown in the form of a solid screw having the toggle-bearing b formed thereon. In this application I only claim such specific form of removable and adjustable bottom. The broad idea of suchremovable and adjustable bottom for supporting toggle P and shaft F, whether such bottom be a screw or other constructed form, is claimed in another pending application of even date herewith, Serial No. 213,797, and, further, the broad idea of a removable and adjustable screw bottom with stuffing-box for toggle P and shaft]? is claimed in still another pending application filed the 1st day of December, 1886, Serial No. 220,330.

That I claim is 1. In a stone-breaker, the combination of top plate E, having cylindrical bearing a, provided at its bottom with an inwardly-proj ecting flange e, removable bushing e in and snugly fitting said bearing and supported upon flange e and said bushing having a cylindrical bore, gyratory shaft F, having slightly-tapered cylindrically-shaped head f, adapted to said bushing, and operating devices for gyrating said shaft, substantially as set forth.

2. In a stone-breaker, the combination of a vertically-adj ustablegyratory shaft having at its upper end an outside bearing and a crusher-head below said bearing, a drivingwheel having an eccentric bore'for the lower end of the shaft, and a knuckle or toggle step-bearing engaging the lower end of said shaft, said toggle being so situated that it always points away from the most eccentric portion of the wheel, thereby causing it to incline constantly toward that part of the crusher-head which is in action, substantially as set forth.

3. In a stone-breaker, the combination of a gyratory shaft, a crusher-head on said shaft, a driving-wheel having a depending sleeve or hub provided with'an eccentric bore for the lower end of said shaft, and a knuckle or tog washer, lateral duct or ducts 0, leading from chamber 12 into well I), driving-wheel H, resting on washer h and having abushing or sleeve h depending into well I), a duct or ducts 0 in sleeve h, communicating with well Z), and an oil-supply leading into chamber b substantially as set forth.

5. In a stone-breaker, the combination,with a gyrating shaft, a top plate E, having central bearing e, an inwardlyprojecting flange e at the bottom of bearing e, a loose sleeve or bushing in bearing e snugly fitting said bearing and resting on flange e for the upper end of said shaft, and a driving-wheel having a hub with an eccentric bore for the lower end of said shaft, substantially as set forth.

6. In a stone-breaker, the combination of a frame A, having bottom plate B, provided with bearing 1), and a gutter 1) outside of and concentric with the top of said bearing, and an oilsupply pipe M, leading to gutter b and having a nozzle m located below the top of the gutter 12 substantially as set forth.

7. In a stone-breaker, the combination of the gyratory shaft F, having wheel H, bottom plate B, having well I? and gutter b exterior to and concentric with said well, washer h between the wheel II and top of said bearing, ducts 0 and 0 between the washers and bearing, and an oil-supply pipe having an inlet or supply end located below the line of the top of gutter b substantially as set forth.

8. In a stone-breaker, the bottom plate B, having well 6, gutter b outside of and concentric with well b and extending above said plate and provided with radial arms or bars I), substantially as set forth.

9. In a stone-breaker, the combination of gyratory shaft F, driving-wheel H, provided with a central bore and an eccentric sleeve, plate 13, having a central bearing b, a washer h at the top of said bearing, a gutter b surrounding and extending above and below said washer, ducts 0 and 0', and an oil-supply pipe M, substantially as set forth.

10. In a stone-breaker, the combination of the bottom plate, well 1) in said plate, adj ustable solid screw bottom b', having oil-channel q) and fixed toggle-bearing Z7 gyratory shaft F, and toggle P between said bearing 17 and said shaft, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

ROBERT MOCULLY.

Witnesses:

S. J. VAN STAVOREN, CHAS. F. VAN HORN. 

